A dust-removing and direct-blowing-preventing building ventilation duct

Abstract

This utility model discloses a dust removal and direct-blow prevention building ventilation duct, comprising: an exhaust box for installation, a first pipe fixedly installed on the left side of the exhaust box, and a second pipe installed on the right side of the exhaust box; further comprising: a dust removal mechanism provided on the first pipe, wherein the dust removal mechanism includes a filter plate, a fixing rod, a first spring, and a pull rod, the left and right sides of the filter plate are connected to the fixing rods, the upper outer side of the fixing rods is provided with the first spring, and the lower end of the filter plate is provided with the pull rod; a baffle, wherein the left side of the baffle is provided with a direct-blow prevention mechanism, wherein the direct-blow prevention mechanism includes a first connecting rod, a second connecting rod, and a transmission rod. This dust removal and direct-blow prevention building ventilation duct facilitates rapid dust removal inside the ventilation duct, ensures internal air circulation, facilitates disassembly and maintenance of the internal airflow adjustment device of the building ventilation duct, and facilitates direct-blow prevention treatment of the exhaust airflow direction inside the building ventilation duct.

Description

Technical Field

[0001] This utility model relates to the field of building ventilation duct technology, specifically a building ventilation duct for dust removal and preventing direct airflow. Background Technology

[0002] Ventilation ducts are pipe systems used to transport and distribute air within a building, primarily to reduce the concentration of harmful gases. However, traditional building ventilation ducts are difficult to clean, causing dust to accumulate on the internal filters, affecting airflow. Furthermore, the constant direct airflow within the ducts can impact efficiency. Therefore, building ventilation ducts with dust removal and direct airflow prevention features have been designed.

[0003] The patent announcement number CN211822979U discloses a building ventilation duct that is easy to clean. It includes a main ventilation duct, with a secondary ventilation duct connected to its bottom end. A first fixing plate is fixedly installed on the outer side of the secondary ventilation duct, and placement slots are provided on both sides of the main ventilation duct. This invention features a first filter screen inside the fan frame. When airflow passes through the first filter screen, dust is adsorbed by it, preventing dust from entering the main ventilation duct and increasing cleaning difficulty. The design incorporates a first fixing plate, a second return spring, a placement block, and an mounting block on the fan frame. Pushing the fan frame upwards corresponding to the secondary ventilation duct causes the lower second fixing plate to retract and move upwards. Rotating the fan frame then places the mounting block onto the corresponding placement block. The reaction force of the second return spring locks the fan frame in place, ensuring a more secure installation, facilitating installation and disassembly, and making cleaning easier.

[0004] Based on existing solutions and actual production and processing, current building ventilation ducts still have some problems: it is not convenient to quickly remove dust from the inside of the ventilation duct, it is not possible to ensure internal air circulation, it is not convenient to disassemble and repair the airflow adjustment device inside the building ventilation duct, and it is not convenient to prevent direct airflow from the exhaust direction inside the building ventilation duct. Therefore, this utility model provides a dust removal and direct airflow prevention building ventilation duct to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a building ventilation duct with dust removal and direct airflow prevention, so as to solve the problems mentioned in the background art, such as the inconvenience of quickly removing dust inside the ventilation duct, the inability to ensure internal air circulation, the inconvenience of disassembling and repairing the airflow adjustment device inside the building ventilation duct, and the inconvenience of preventing direct airflow from the exhaust direction inside the building ventilation duct.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building ventilation duct for dust removal and preventing direct blowing, comprising: an exhaust box for installation, a first pipe fixedly installed on the left side of the exhaust box, and a second pipe installed on the right side of the exhaust box;

[0007] It also includes: a dust removal mechanism is provided on the first pipe, wherein the dust removal mechanism includes a filter screen plate, a fixed rod, a first spring and a pull rod, the left and right sides of the filter screen plate are connected to the fixed rod, the upper outer side of the fixed rod is provided with the first spring, and the lower end of the filter screen plate is provided with the pull rod;

[0008] A baffle is provided on the left side of the baffle. The anti-direct-blow mechanism includes a first connecting rod, a second connecting rod, a transmission rod, a connecting block, and a threaded rod. The right side of the first connecting rod is connected to the second connecting rod, and the lower end of the second connecting rod is connected to the transmission rod. The middle part of the transmission rod is connected to the connecting block, and the threaded rod is connected inside the connecting block.

[0009] Preferably, the filter plate slides on the upper end of the fixing rod, and a first spring is provided on the outer side of the upper end of the fixing rod in a fitted state.

[0010] Preferably, the lower ends of both the first pipe and the second pipe are provided with mounting brackets, and the collection tanks are symmetrically arranged about the center line of the mounting brackets.

[0011] Preferably, a support frame is installed inside the right end of the second pipe, and a second spring and a hook block are provided at the upper and lower ends of the support frame. The upper end of the second spring is fitted with the hook block, and the hook block is connected to the slot by a snap-fit ​​method.

[0012] Preferably, the support frame is provided with baffles at equal intervals inside, and the first connecting rod forms a rotating structure at the left end of the baffle.

[0013] Preferably, the second connecting rod forms a rotating structure at the left end of the first connecting rod, and the first connecting rod and the second connecting rod are symmetrically arranged about the center line of the baffle.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the dust removal and direct blowing prevention building ventilation duct facilitates rapid dust removal inside the ventilation duct, ensures internal air circulation, facilitates disassembly and maintenance of the air direction adjustment device inside the building ventilation duct, and facilitates direct blowing prevention treatment of the exhaust air direction inside the building ventilation duct.

[0015] Equipped with a filter screen, pull rod, and collection trough, when dust removal is required inside the ventilation duct, a special tool is used to hook the lower end of the pull rod, causing the pull rod to push the filter screen downwards along the path of the fixed rod, compressing the first spring. Then, the pull rod is quickly released, causing the filter screen to be pushed upwards by the elastic force of the first spring, impacting the inner wall of the first or second pipe. Through the strong impact, the dust on the filter screen is forced to fall downwards due to gravity, and finally collected inside the collection trough along the path of the mounting bracket. This facilitates rapid dust removal inside the ventilation duct and ensures internal air circulation.

[0016] Equipped with a support frame, hooks, and slots, when the air direction adjustment device needs to be disassembled for maintenance, the hooks connected to the upper and lower ends of the support frame are slid up and down to press the second spring, causing the hooks to disengage from the slots. Then, the support frame is pulled to the right to remove it from the right end of the second duct, facilitating the disassembly and maintenance of the air direction adjustment device inside the building's ventilation duct.

[0017] Equipped with a baffle, a second connecting rod, and a threaded rod, when it is necessary to prevent the ventilation duct from being constantly exposed to direct airflow, the motor is started to drive the threaded rod to rotate. The threaded rod, through its external threads, drives the connecting block to move left and right. The connecting block, through a transmission rod, drives the second connecting rod to rotate left and right, causing the second connecting rod to drive the first connecting rod to move up and down. During the up and down movement of the first connecting rod, the baffle rotates up and down inside the support frame, thereby adjusting the airflow direction inside the ventilation duct and facilitating the prevention of direct airflow from the building's ventilation ducts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention viewed from the left.

[0019] Figure 2 This is a frontal cross-sectional view of the present invention.

[0020] Figure 3 This is a side view sectional structural diagram of the present invention;

[0021] Figure 4 This is a top view sectional structural diagram of the present invention;

[0022] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 6 This utility model Figure 2 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Exhaust box; 2. First pipe; 3. Second pipe; 4. Filter plate; 5. Fixing rod; 6. First spring; 7. Pull rod; 8. Mounting bracket; 9. Collection trough; 10. Support frame; 11. Second spring; 12. Hook block; 13. Slot; 14. Baffle; 15. First connecting rod; 16. Second connecting rod; 17. Transmission rod; 18. Connecting block; 19. Threaded rod; 20. Motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 This utility model provides a technical solution: a building ventilation duct for dust removal and preventing direct airflow, including an exhaust box 1, a first pipe 2, a second pipe 3, a filter plate 4, a fixing rod 5, a first spring 6, a pull rod 7, a mounting bracket 8, a collection trough 9, a support frame 10, a second spring 11, a hook block 12, a slot 13, a baffle 14, a first connecting rod 15, a second connecting rod 16, a transmission rod 17, a connecting block 18, a threaded rod 19, and a motor 20.

[0027] When performing dust removal on building ventilation ducts, for example... Figure 2 Appendix Figure 3 and attached Figure 4As shown, the filter plate 4 slides on the upper end of the fixed rod 5. A first spring 6 is positioned on the outer side of the upper end of the fixed rod 5 in a fitted state. Mounting brackets 8 are installed at the lower ends of both the first pipe 2 and the second pipe 3. The collection trough 9 is symmetrically arranged about the center line of the mounting bracket 8. When the exhaust box 1 is started, it absorbs air from inside the building through the first pipe 2 and finally discharges it through the second pipe 3. During the absorption and discharge process, the air needs to pass through the filter plate 4 installed inside the first pipe 2 and the second pipe 3. Because the filter plate 4 filters the air for a long time, a large amount of residue will remain on its surface. Dust accumulation necessitates dust removal. Pulling lever 7 forcefully pushes the filter plate 4, causing it to press downwards along the path of fixing lever 5 against the first spring 6. Once the filter plate 4 has moved to the desired position, lever 7 is released. The first spring 6, through its own elasticity, quickly pushes the filter plate 4 upwards, impacting the upper inner wall of the first pipe 2 or the second pipe 3. The strong impact causes the dust particles floating on the filter plate 4 to fall off and be guided along the path of the mounting bracket 8 at the lower end of the first pipe 2 or the second pipe 3 into the collection trough 9 for collection, thus achieving rapid dust removal from the building's ventilation ducts.

[0028] The building's ventilation ducts are treated to prevent direct airflow, for example, by attaching... Figure 1 Appendix Figure 2 Appendix Figure 4 Appendix Figure 5 and attached Figure 6 As shown, a support frame 10 is installed inside the right end of the second pipe 3. A second spring 11 and a hook block 12 are installed at the upper and lower ends of the support frame 10. The upper end of the second spring 11 is in contact with the hook block 12. The hook block 12 is connected to the slot 13 by a snap-fit ​​mechanism. Baffles 14 are evenly spaced inside the support frame 10. A first connecting rod 15 forms a rotating structure at the left end of the baffle 14, and a second connecting rod 16 forms a rotating structure at the left end of the first connecting rod 15. The first connecting rod 15 and the second connecting rod 16 are symmetrically arranged about the center line of the baffle 14. When preventing direct airflow from the ventilation duct, the motor 20 is started, driving the threaded rod 19 to rotate. The threaded rod 19 then drives the connecting block 18 to... When the connecting block 18 moves left and right, it drives the second connecting rod 16 to rotate left and right on the right side of the first connecting rod 15 via the transmission rod 17. When the second connecting rod 16 moves, it also drives the first connecting rod 15 to move up and down, so that the first connecting rod 15 drives the baffle 14 to rotate up and down inside the support frame 10. This can change the direction of the direct airflow inside the second pipe 3, thereby achieving anti-direct airflow treatment. When the airflow adjustment device is damaged after long-term use, the hook blocks 12 at the upper and lower ends of the support frame 10 are slid to squeeze the second spring 11. After the hook blocks 12 are disengaged from the slot 13, the support frame 10 can be peeled to the right side of the right end of the second pipe 3, thereby achieving repair.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A building ventilation duct for dust removal and preventing direct airflow, comprising: The exhaust box (1) for installation, the first pipe (2) fixedly installed on the left side of the exhaust box (1) and the second pipe (3) installed on the right side of the exhaust box (1); Its characteristic is that it further includes: The first pipe (2) is provided with a dust removal mechanism, which includes a filter plate (4), a fixing rod (5), a first spring (6) and a pull rod (7). The filter plate (4) is connected to the left and right sides by the fixing rod (5), and the upper outer side of the fixing rod (5) is provided with the first spring (6), and the lower end of the filter plate (4) is provided with the pull rod (7). A baffle (14) is provided on the left side of the baffle (14). The anti-direct-blow mechanism includes a first connecting rod (15), a second connecting rod (16), a transmission rod (17), a connecting block (18), and a threaded rod (19). The right side of the first connecting rod (15) is connected to the second connecting rod (16), and the lower end of the second connecting rod (16) is connected to the transmission rod (17). The middle part of the transmission rod (17) is connected to the connecting block (18), and the threaded rod (19) is connected inside the connecting block (18).

2. The building ventilation duct for dust removal and preventing direct airflow as described in claim 1, characterized in that: The filter plate (4) slides on the upper end of the fixing rod (5), and the upper outer side of the fixing rod (5) is fitted with a first spring (6).

3. A building ventilation duct for dust removal and preventing direct airflow as described in claim 1, characterized in that: The lower ends of the first pipe (2) and the second pipe (3) are both provided with mounting brackets (8), and the collection tank (9) is symmetrically arranged about the center line of the mounting bracket (8).

4. A building ventilation duct for dust removal and preventing direct airflow as described in claim 1, characterized in that: The right end of the second pipe (3) is equipped with a support frame (10), and the upper and lower ends of the support frame (10) are provided with a second spring (11) and a hook block (12). The upper end of the second spring (11) is in a close fit with the hook block (12), and the hook block (12) is connected to the slot (13) by a snap-fit ​​method.

5. A building ventilation duct for dust removal and preventing direct airflow as described in claim 4, characterized in that: The support frame (10) is provided with baffles (14) at equal intervals inside, and the first connecting rod (15) forms a rotating structure at the left end of the baffle (14).

6. A building ventilation duct for dust removal and preventing direct airflow as described in claim 1, characterized in that: The second connecting rod (16) forms a rotating structure at the left end of the first connecting rod (15), and the first connecting rod (15) and the second connecting rod (16) are symmetrically arranged about the center line of the baffle (14).

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